№2, 2020
Research of bioecological features and coenopopulations Dactylorhıza romana subsp. georgica
Summary
The results of the research conducted in May 2020 on the study of the plant Dactylorhiza romana subsp. georgica (yellowish orchid) in the forests of Siyazan (Galaalti) and Shamakhi (Pirgulu State Nature Reserve (PSNR)) are presented. Some environmental indicators (air temperature, humidity and amount of carbon dioxide) were measured in the areas where the species is distributed, as well as the pH of the soil samples taken in the laboratory, the electrical conductivity and temperature of the solution were studied. The description of the areas where the yellowish orchid grows is presented together with its projective cover and the dominant species. Thus, the edificators in Galalti are Quercus macranthera and Carpinus betulus, and those in PSNR are Fagus orientalis and Carpinus betulus. In the above mentioned regions the ontogenetic status, demographic structure and morphometric parameters of coenopopulations of the species under the research were studied. In both regions, a large number of generative, mainly young and middle-aged individuals (SP1 - 50.61 %, SP2 - 50.0%) was observed in the coenopopu - lations of yellow orchids, also the number of pregenerative individuals is quite high (respec - tively, SP1 - 49.37 % and SP2 - 49.99%). Both coenopopulations are incomplete due to the absence of normal, seedlings, subcenil and senile individuals. The efficiency index of both coenopopulations is high (SP1- 0.560, SP2 - 0.587), which indicates that they are in good and stable condition.